Ophthalmic mounting.



N. M. BAKER OPHTHALMIC MOUNTING, APPLICATION FILED APR.3. 1914.

Pat ented Oct. 2,1917.

IIIVVENTOR WELQSQNM BAKER? MJ MM Arm/mm To'all whom it may oo'n'cemi- NELSON ivr. BAKER, orv sonrmsmnen, MASSACHUSETTS, ASSIGNOR r0 AMERICAN- OPTICAL COMPANY, OF 'SOUTHBEIIDGE, MASSACHUSETTS, A VOLUNTARY ASSO- Y C'IATION OF 'IVIASSACHUSETTS.

OPHTHALMIC MOUNTING.

Application filed April 3, 1914 Serial No; 829.248.

Be it known that I, NEL'soN M. BAKER, a citizen of the United States, residing at Southbridge', inthe countyv of Worcester and State of Massachusetts; have invented certain new and useful Improvementsin OphthalmieMountings, of which the following is'a'specification. v

My invention relates to improvements in ophthalmic mountings and has particular reference to'a mounting of what is commonly known as the pince-nez type, that is, a mounting held in place by means associated with the bridge or connecting memher for the lenses.

The leading 'obje'ctbf my invention is the provision of an improved manner of retaining amounting in predetermlned position on the face of the wearer, and of novel and improved means for attaining this result.

A further object of my invention is the provision of an improved 'mountingembodying means other than the usual brldge or lens connecting member, which shall be shape'dto 'conformto the nose of the wearer to "support 'and position the mounting, and

which in addition shall be provided with gripping-means for securing the-mounting against forward tilting or sliding movement either above or below the center of the mounting.

"'Other obje'cts and advantages of my 1mp'roved construction should be readily ap--' parent by referenceto the followlng speclfication taken in connection with the 'accompanyi'n'gdrawing s. and it will-be understood that I "may-makeany modifications in the specific. details of construction shown and described within thescope of the appended claims without departing from or exceeding thespirit of'my invention.

Figure I represents afront elevation of a mounting embodying my" improvement;

I Fig. II represents a sectional view on the line IIII of Fig. I. p

FigpIII represents a similar view of a slightly modified construction.

Fig. IV. illustrates another form thereof.

Fig. V is a 'further' emb'odimen't of the same idea. I

Fig. VI illustrates the use of an automatic lower gripping member.

illustrates a different construc-.

tion for attaining the-same result.

disagreeable effects to the wearer.

A further necessity in' the fitting of pince nez eyeglasses is that the glasses be con- Fig. VIII.

Fig. IX illustrates a; slight variation Specification of Letters Patent. 1 Patented Oct 2 Fig. X represents another type of auto I matic gripping member. I

mentthere'off v t Fig; XII represents sectionalview on the lineQXIIfand Fig. XIII represents a perspective view in disassembled relation.

In the drawings; in" which similar characters of 'reference'are "employed tov denote corresponding parts throughout the several views, 'the'nnm'eral 1 designates the lenses connected by abridge member 2 having at Fig. XI represents still further embodiof another form of my'rnounting with parts itsendsfthe lens engaging clips '3. This;

bridge is preferably provided as at 4: with seats for the fingerpiece .or other pivoted levers ewhichiare preferably suitably spring actuated to swing the inner ends ofthe same inward into engagement with 'thenose.

In the fitting of eyeglasses, and "particu larly eyeglasses of the pince-nez type; there are certain ,primary considerations which 'mustbe carefully'zob'se'rved if the lenses are to prove most efficient' in correcting the visual de fect offthe wearer. Among these points might be. mentioned the necessity of having the mounting each-time' occupy the same positiono'n ithefaceas that in which the lens --is fitted', for shouldthe mounting be placed slightly higher 'or lower on the face than the intended point prismatic effects will be produced by the "lens subjecting the eye to considerable strain, as-with an unintended prism present certain'o'f the muscles of the eye must at all times be under tension to try andbalance the prism, this being liable to produce headaches and other" an axis, the guards gradually slipping out of son doing clerical or other work requiring them to lean considerably forward. In this event the action will be that of forward slipping at the lower portion of the nose, the mounting rolling or tilting from the bottom outward.

It is the purpose of my present invention to provide against both of these contingencies, and at the same time insure correct positioning of the mounting on the face. In the attainment of this object, as will be noted in the drawings, I have employed a lower weight bearing member supported for adjustment to be fitted to the side of the nose of the wearer, and have then provided two distinct gripping members, one for engaging the loose flesh at the top of the nose and preventing the ordinary forward tilting of the mounting, the other forgripping-the'lower part of the nose and preventing sliding forward of the mounting at the bottom when one is leaning over.

Referring specifically to the drawings: In that form of my invention illustrated in Fig. II, I have shown a lower weight supporting member 6 having an aperture 7 formed therein, and have shown the lever 5 as provided with an adjustable portion 8 terminating in a bearing pad 9 adapted to pass through the aperture 7 as the lever is actuated by its spring 10, so that both the upper pad 11 and the lower pad 9 will grip the nose to prevent slipping, while the weight of the mounting will be supported by the fixed member 6, the two members thus being so adjusted as to fit properly at but one point on the nose, thus insuring correct positioning of the mounting before the eye.

In Fig. III, I have shown a reversal of the lower portion of my guard just described, in that I employ the adjustable weight supporting member 6 and form the aperture 7 in the lower pad 9, the weight supporting member 6, therefore, projecting through the aperture in the moving. pad 9, in place of the pad 9 projecting through an aperture in the moving member.

In Fig. IV the structure as illustrated is quitesimilar to that shown in Fig. III, the difference being that the lower member. 9 comprises two arms or branches spanning the pad 6, in place of a continuous looped member, the operation being otherwise the same in both instances.

In Fig; V, I also make use of the same principle, but employ merely two parallel I rigid but adjustable portion 12 having the pintle 13 on which is rotatably mounted the gripping pad 14, said pad being actuated by a spring 15 to swing its front edge inward into gripping engagement with the nose, the pad, therefore, operating automatically and not being controlled by the finger piece lever, as in the prior forms.

In Fig. VII, I have again illustrated a resiliently mounted lower pad, in this instance, however, the pad 14 having a plurality of tongues 16 for clampingly engaging the guard 12 and having an integral or attached spring portion 17 for actuating the same. 1

The form shown in Fig. VIII illustrates the use merely of a wabbly lower pad which tends to slide, and will grip the nose to prevent slipping of the mounting without thev use of spring actuating means therefor.

Fig. IX illustrates a similar construction with the use of a bladespring 18 for accentuating the action of the pad.

In Figs. X and XII I have'shown as disposed on the rear face of the guard 12 and the pintle 13, on which is mounted the hook-, like guard member 19 actuated by the spring 20 which serves to swing the said member 19 around into biting or gripping engagement with the nose to prevent slipping of the mounting.

Figs. XI and XIII illustrate a form similar in several respects to Figs. VII and IX, in that the lower pad 14 operates through an aperture in the guard proper 12 and is actuated through said aperture by the blade spring 18. I

From the foregoing description taken in connection with the drawings, the constructionand operation of my improved mounting should be readily apparent, and it will be seen that I have provided a mounting in which the weight supporting members may be adjusted to exactly fit the nose when the mounting is in, correct position upon the face, in which the upperv gripping members are resiliently supported and engage the flesh at the upper portion of the nose to prevent forward tilting movement, while additional lower members are provided which grip the lower part of the nose and prevent forward sliding of the weight supporting members.

I claim a 1. In an ophthalmic mounting, the combination with a bridge member of. bearing members rigidly secured and depending from the bridge member for supporting the weight of the mounting, guard arms pivot inwardly relative thereto to grippingly engage the lower portion of the nose and prevent forward slipping of the weight sup porting members.

2. In an ophthalmic mounting, the com bination with a brldge member, of nose engaging members rigidly secured to the bridge member and depending therefrom, said members having an outer bearing portion surrounding a central aperture, upper gripping pads, mounted on the bridge for securing the mounting against tilting on the face, and supplemental lower resiliently actuated gripping members operating through the apertures in the lower nose engaging members for olampingly engaging the nose to retain the lower members in proper position thereon. p

8. In an ophthalmic mounting, the combination with a bridge of perforated lower rests depending from the bridge, levers pivoted on the bridge and bearing upper clamping members for retaining the mounting against forwardtilting on the face, and supplemental lower gripping members carried by the levers and having portions operating through the apertures in the lower rests to supplement the actionof the rests in supporting the mounting and preventing outward swinging of the lower portions thereof, substantially as illustrated.

4. An ophthalmic mounting, including a bridge for spanning the nose of the wearer, rigidly secured adjustable positioning members depending from the bridge for insuring correct positioning of the bridge on the face, and resiliently actuated means for clamping the mounting in position on the face as determined by the bridge and positioning members, said clamping means including upper pads for engaging the upper portion of the nose and preventing forward tilting movement of the mounting and lower pads for tioning members.

' In testimonywhereof I affix my signature in presence of two witnesses. I

NELSON M. BAKER; Witnesses i t H. K. PARSONS, I

FLORENCE E. CoDnNE.

Copies of this patent may be obtained for five cents each, by addressing the Gommissioner of Patents, Washington, D. G.

engaging the nose and preventing forward 1 sliding or twisting movement of the posi-v 

